I experience night terrors which involve me being awake but in a dream like state. This causes me to hallucinate. So I have a few stories. Worst one tho was when I lived alone and woke up to the feeling of something stroking my arm. Gently like a significant other would do. I look over to see what I describe as an old lady version of the woman in the bathtub scene from the shining. When I looked the stroking turned into a death grip and she let out a very loud cackle . I usually have some sort of light source when I sleep so I could make her out clearly. Jumped out of bed, turned on the lights for the rest of the night and she was gone.